.middle > div {
    border: 1px solid red;
}

/*留言標題下面的内容*/
.middle > div > div:nth-child(2) {
    display: flex;
    justify-content: center;
}

.middle > div > div:nth-child(2) > div > div:nth-child(1) > div:nth-child(1) {
    display: flex;
    justify-content: center;

}

.middle > div > div:nth-child(2) > div > div:nth-child(1) > div:nth-child(1) > div:first-child {
    color: rgb(230, 145, 55);
}

.middle > div > div:nth-child(2) > div > div:nth-child(1) {
    margin: 50px 0 30px;
}

/*--------------------------留言具体内容----------------------------*/
.middle > div > div:nth-child(2) > div > div:nth-child(2) > div > div:nth-child(1) {
    line-height: 40px;
}

.middle > div > div:nth-child(2) > div > div:nth-child(2) > div > div:nth-child(2) {
    height: 50px;
    background-color: rgb(238, 238, 238);
    border: 1px dashed gray;
    padding: 0 20px;
    line-height: 50px;
}

.middle > div > div:nth-child(2) > div > div:nth-child(2) > div:nth-child(3) > div:nth-child(2) {
    height: 200px;
    line-height: 30px;

}

.middle > div > div:nth-child(2) > div > div:nth-child(2) > div:last-child {
    display: flex;
    justify-content: center;
}

.middle > div > div:nth-child(2) > div > div:nth-child(2) > div:last-child > div {
    padding: 5px 100px;
    margin: 20px 0;
    background-color: rgb(230, 145, 55);
    color: white;
    border-radius: 90px;
    cursor: pointer;
    box-shadow: 1px 1px 1px 1px red;
}
.middle > div > div:nth-child(2) > div > div:nth-child(2) > div:last-child > div:hover{
    background-color: blue;

}